Aston Villa have been handed an injury blow ahead of their Europa Conference League semi-final first leg against Olympiacos, giving Unai Emery a decision to make over selection. After the drama that unfolded at Villa Park on Saturday night in the Premier League, Aston Villa return on Thursday in the Europa Conference League semi-final. Unai Emery will lead his side into the first leg against Olympiacos with confidence after overcoming an impressive LOSC Lille side in the previous round, with the Villans just two games away from reaching a European final. With fourth place in the hands of the M…